| 摘要 |
A network device for transmitting a set of known pilot symbols in a communications system utilizing a plurality of transmit sources. The network device includes generating means for generating the set of known pilot symbols to be transmitted for each of the plurality of transmit sources and inserting means for inserting pilot symbols for each of the plurality of transmit sources. The network device also includes creating means for creating a near to full orthogonal matrix over time and frequency using the fewest number of pilot symbols. The pilot symbols are used for at least one of channel, frequency, and phase tracking at a receiving station.
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